FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended	4 Months Ended
	Jun. 01, 2021	Sep. 30, 2021	Sep. 30, 2021
Assets measured at fair value on a recurring basis
Contingent consideration liability		$ 44,167	$ 44,167
Investments in other assets		20,000	20,000
Nordeus Limited
Assets measured at fair value on a recurring basis
Contingent earn-out			61,055
Contingent consideration liability, increase		20,000
Contingent consideration liability		$ 81,181	$ 81,181
Nordeus Limited | Performance Period One
Assets measured at fair value on a recurring basis
Performance period	12 months
Nordeus Limited | Performance Period Two
Assets measured at fair value on a recurring basis
Performance period	24 months